Filing machine



July 1, 1952 J. ROCK, JR

FILING MACHINE Filed Feb. 19, 1948 2 SHEETS1SHEET A ttorhe s.

y 1952 J. RocK, JR 2,601,717

FILING MACHINE Filed Feb. 19, 1948 2 SHEETS-SHEET 2 INV EN TOR. Jaye a); Rock 77- Huang/5,

Patented July I, 1952 FILING MACHINE Joseph Rock, Jr., North Syracuse, N. Y., assignor to Grouse-Hinds Company, Syracuse, N. Y.,

corporation of New York Application February 19, 1948, Serial No. 9,372

3 Claims.

This invention relates to a work supporting table for machines of the reciprocating tool type, such as a filing machine of the type wherein the file holder is reciprocated vertically with the file carried by the holder extending upwardly through a work supporting table.

I The invention has a an object a work supporting table for machines of the type referred to embodying an arrangement by which the machine is particularly well adapted for production operations, such as removing the flashing, Or burrs, from east articles, such as sand castings and die castings formed of non-ferrous metals and plastics.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is a front elevational view with parts broken away and parts in section of a filing ma chine embodying my invention.

Figure 2 is a vertical sectional view taken on line 2-2, Figure 1.

Figure 3 is a top plan view of the machine.

The machine comprises a base portion including a crank housing Ill on top of which is secured a unit in which the file holder I l is mounted for vertical reciprocation. A crank shaft I2 is journalled in the housing on antifriction bearings I 3. The inner end of the shaft is provided with a crank disk l4 arranged in a compartment 15. One end of the shaft l2 extends outwardly through the housing and is provided with a drive pulley l5 which is operatively connected to a motor, or the like, to effect rotation of the shaft. The crank disk I 4 is provided with a crank pin II. A connecting rod [8 is journalled at one end on the crank pin l1 and at its opposite end on a wrist pin [9 secured in the lower end of the file holder II.

The top of the housing I0 is apertured to receive the file holder. The lower portion 20 and the upper portion 2| of which is of circular formation and the intervening portion 22 of square formation. The square portion 22 is slidably mounted in a square antifriction bearing consisting of a cage 24 retaining a plurality of rollers 25, the cage and rollers being arranged in a square sleeve 26 mounted in an outer sleeve 27. The lower end of the sleeve 21 is arranged in a member 28, and the upper end of the sleeve 21 is arranged in an upper member 29, these members constituting the file hold unit are all detachably secured to the top of the housing In, as by screws 30. The member 29 is recessed to receive a packing 3| contracted about the upper end of the file holder by a gland 32 secured in place by a cap 33 detachably secured to the member 29, see Figure 2. Oil ring 34 are mounted in the top wall of the housing Ill and yieldingly contracted about the lower portion 20 of the file holder ll.

A file 35 is detachably secured in the upper end of the holder, as by a screw 36, the file extending upwardly through an aperture 31 formed in a work supporting plate 38. The table 318 is supported from the base for rocking movement, or oscillation, about a horizontal axis intercepting the file 35.

In the structure herein disclosed, the table 38 is mounted upon a plate 40 of inverted V formation, with the apex or ridge 4| of the plate engaging the under side of the table and extending transversely thereof. The plate is supported by brackets 42 slidably mounted in grooves formed in opposite sides of the housing Ill, the brackets being formed with elongated slots 43 to receive screws 44- threading into the housing and providing means whereby the table is adjusted vertically toward and from the base. The table 38 is formed with a pair of depending bosses 45 arranged in apertures 46 formed in the plate 40. The bosses 45 are threaded to receive screws 41 on each of which there i mounted a helical compression spring 48 and a c011ar49. The collars 49 are of cylindrical formation and their lengthwise dimension is greater than the width of the slots 45. The collars engage the under side of the plate 40 at the apex thereof.

With this arrangement, the table 38 is yieldingly held into engagement with the plate 40 and is yieldingly maintained in horizontal position shown in full line Figure 1, the plate being radially rocked, or oscillated, to dotted line position indicated at 5|, 52. The plate 40 is preferably provided with reinforcing members 53 welded, or otherwise secured to the under side of the plate 40. Also, I prefer to interpose a sheet 55 of material having some resiliency between the plates 38 and 40. Laminated phenolic material, or the like, is suitable for this purpose. The sheet or plate 55 provides some resiliency for the table 38 and also reduces noise and vibration when the machine is in operation.

The tilting table arrangement described is particularly advantageous for the filing and trimming of parts on a production basis, especially where the parts are formed with apertures, the inner surfaces of which have to be trimmed.

With the structure described, the operator can bring opposite sides of the aperture into engagement with the file without the necessity of effecting relative movement between the work and the table, the engagement being accomplished by simply rocking the table on the ridge or apex 4| of the plate 40. Heretofore, filing machines of this type have been used only for tool and die work. However, I have found that by operating the machine at a high speed and with a short stroke of the file holder 2|, castings formed of' non-ferrous materials and plastic materials can be de-bored or trimmed with exceptional rapidity and with tremendously less effort on the part,

of the operator than performing the filing operation by hand.

The compartment I5 is provided with a sup ply of oil for the connecting rod bearings. One side of the housing 19 is apertured to receive a pipe nipple 69 of relatively large diameter and to the outer end of which is secured a vertically extending nipple 6!, the upper end of which is provided with a cap I32 having a depending annular flange 33 encircling the upper portion of the nipple 61 which is provided with apertures 84. This arrangement provides an oil sump increasing the capacity of the compartment 55, and a breather to accommodate the displacement of the reciprocating file holder Ill. The oil is retained in the compartment l5 by the rings 39 and the retainer cap 95 encircling the inner end of the crank shaft l2.

The file holder bearing 25 is lubricated separately by the fitting 66, the lubricant being retained in the bearing assembly by the rings 39 and the packing 31. The upper cap 33 is formed with an annular recess 51 encircling the upper end of the file holder, and a horizontal passage 63' to the outer end of which there is connected a conduit 69 containing a supply of air under pressure.

With this arrangement, the recess 67 is supplied with air pressure which escapes upwardly about the upper portion of the file holder and prevents dust and filings from entering the file holder supporting unit and causing damage to the bearing 29.

What I claim is:

1. A work supporting table for machines of the vertically reciprocating tool type comprising a fixed support, a table mounted on said support for free rocking movement relative thereto on a horizontal axis intercepting the axis or the tool, means cooperable to yieldingly rnaintain said table horizontal and said table being formed with a central aperture for reciprocation of the tool therein.

2. A work supporting table for machines of the vertically reciprocating tool type comprising a stationary support, a work table mounted on said support for rocking movement relatively thereto on a horizontal axis intercepting the axis of the tool, means yieldingly maintaining said, table level, said support being cooperable to limit rocking movement of the table about said axis, and said table being formed with a central aperture for reciprocation of the tool therein.

3. A work supporting table for filing machines and the like comprising a stationary plate formed with a ridge extending horizontally and having inclined surfaces extending outwardly from said ridge, said plate being arranged with the ridge extending on a line intercepting the file, a table positioned on said ridge for free rockingmovement relative to the plate, means yieldingly securing the table to the plate and maintaining the table in horizontal position, and said plate and table being formed with alined central aper tures for reciprocation of the file therein.

JOSEPH ROCK, JR.

REFERENBES errrzp The following references are of record in the file of this patent:

Great Britain Mar. 12, 1931 

